Bounds on contention management in radio networks

  • Authors:
  • Mohsen Ghaffari;Bernhard Haeupler;Nancy Lynch;Calvin Newport

  • Affiliations:
  • Computer Science and Artificial Intelligence Lab, MIT;Computer Science and Artificial Intelligence Lab, MIT;Computer Science and Artificial Intelligence Lab, MIT;Department of Computer Science, Georgetown University

  • Venue:
  • DISC'12 Proceedings of the 26th international conference on Distributed Computing
  • Year:
  • 2012

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Abstract

The local broadcast problem assumes that processes in a wireless network are provided messages, one by one, that must be delivered to their neighbors. In this paper, we prove tight bounds for this problem in two well-studied wireless network models: the classical model, in which links are reliable and collisions consistent, and the more recent dual graph model, which introduces unreliable edges. Our results prove that the Decay strategy, commonly used for local broadcast in the classical setting, is optimal. They also establish a separation between the two models, proving that the dual graph setting is strictly harder than the classical setting, with respect to this primitive.